MacLennan and Logan “Modern” (as used on this web site), Ancient, Weathered.
Generally speaking, the “Ancient” tartan colours are intended to look similar to those produced by vegetable dyes. ‘Kilts & Tartan Made Easy‘ by Scottish Tartan Authority Governor Dr Nicholas J Fiddes is a simple, free guide to wearing kilts. More about colours. The wearing of tartans was prohibited by an Act of parliament in 1746/47: More about tartan prohibition.